Dont Breathe Game

"Hold your breath!" You kept on telling yourself as you get closer and closer to your goal. It was just an ordinary day when someone called you. He asked if you need some cash. But you replied you just need something to do. He smiled a little and pushed an envelope to your hands. You read through the letter and found an address. You asked about the address but the man just silently left. The envelope contains a mission. You don't have anything to do in the afternoon so you are tasked to visit the place and take what is needed. You thought your friend would be great and kind enough to be of help. He didn't. However, you are one of those who knows his way around even in unfamiliar paths.